masochist

so. my boyfriend that I lost my virginity to. I'm with and have been with for 11 months ...I'll get to the point I'm afraid to tell him I'm masochist...(person who enjoys pain to release stress) it's a long story. no this does not mean I want just hard and painful sex this also means I want to 've demanded to do things. not anything like fifty shades grey unlike that movie/book I'm not damaged I can live without being this way. I realized I was this way a little while ago ..(long story). how do I tell him (my boyfriend) I'm like that. what if he isn't into that.. I can live without it but rather not to. help?